Hosted by The Math Forum## Problem of the Week 1012## Unusual Four Squares Examples
An old theorem states that every positive integer is a sum of four squares. How many integers are the sum of the squares of their four smallest positive divisors (1 is included as a divisor)? Source: Iranian Olympiad, 98-99 Crux April 2004 © Copyright 2004 Stan Wagon. Reproduced with permission. |

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8 September 2004